Sessions expiring

Routers may expire sessions.

If you have sessions expire or applications that disappear, check for routers that expire sessions. Most likely, there is a firewall router in the path. If you are using a firewall router, check for session expiration timers for the ports used to get through the firewall. The expiration duration (KeepAlive) should be set greater than the interval set in your operating system. This is set to 2 hours as a default on most computers. The operating systems can be tuned to have shorter values, but it is usually easier to adjust the router; use a value of 2 hours and 10 minutes.